Bailer head



Nov. 3, 1925.

F. LOVE ET AL BA ILER HEAD Filed April 11 1924 e 4 M M9 A r 2 7 0 val/1 vi/M if? 1- 1! w wkmjl w U 2 3 B 4 6 W a a mu y 5 F F 7'0 all whom it may common Patented Nov. 3, 1925.

UNITED STATES 1,559,535 PATENT OFFICE.

FRED LOVE AND CHARLES SHAW, 'OF HEALDTON, OKLAHOMA, ASSIGNORS OF ONE-HALF TO WIRT FRANKLIN. OF ARDMORE, OKLAHOMA.

v BAILEB. HEAD.

, Application filed A ril 11, 1924. Serial No. 765.747.

' Be it known that we. FRED Love and CHARLES SHAW, citizens of the United. States, residing at Healdton, in the county of Carter and State of Oklahoma, have invented certain new and useful Improve ments in Bailer Heads, of which the followmg is a specification.

Our invention relates bailer in use by facilitating its removal from the well.

Bailers, such as have been in general use, in oil fields for removin mud, sand, water and other waste material from oil wells, during the operations of drilling, have been formed open. at the upper extremity and a bail and cable attached thereto for lowering the bailer from the well. 7

Considerable difliculty has often arisen when the bailer is lowered in a well, due to caving in of a portion of the Well shaft, which results in preventing the removal of the bailer-by the use of the attached cable. When a bailer becomes lodged in'a'well due to caving in of the shaft, as above explained, or from any other cause, considerable time and expense is generally involved in removing the bailer by the use of fishing tools,

etc. It is a known fact that wells have often parted to the'bailer head in the event the ailer becomes lodged, as above explained.

A further object of our invention is to provide a bailer head adapted for ready attachment to bailers of standard construction and design.

A still further object of our invention is broadly to improve ments inbailers, such as are used in theop erations of drilling oil and gas wells. More: particularly our invention relates to the bailer head,'and especially to the formation of said head and its associated parts, which co-operate to improve the operation of the to provide means co-opeartin with the bailer head, adapted for connection with the lowering cable to impart a positive jarring and driving action to the bailer headfrom the lowering cable.

It is also an object ofour invention to provide a bailer head assembly of this character as a new article of manufacture,'which will be simple and inexpensive in construction, and positive and reliable in operation,

all as will be hereinafter more fully de-- a the bailer.

formation of the head sections and the means for holding them in assembled position to enclose and embrace the jarring and driving means; and

' Fig. 4 is an end View of the bailer head in detail showing the central bore and coni cal drivin' surface.

In the rawing the portions indicated as A represents the usual tubular bailer chamber which is provided with an elongated opening B- for theentrance of water, mud, sand, etc., in use. At the lower extremity of the tubularchamber A, is shown a valve cage C carrying a weighted discharge valve memberD all of which may be of any wellknown or approved design and which will permit 0 the use of my invention in conjunction therewith, and therefore need no particular description hereafter.

In Figs. 1 and 2, our invention is illustrated as an integral casting 1, preferably formed of hard metal, and constitutes a tapered upper portion 2, having its atest diameter equal to that of the bailer o amber A which it is adapted to adjoin.

Depending from the tapered upper portion 2 is anelongated tubular shank portion 3 of slightly less diameter than the portion 2,

or construction,

adapted to fit within the inner wall of the bailer chamber A and close the end thereof.

We have shown the surface of the shank portion 3, provided with screw threads 4, adapted to engage with co-operating threads in the inner wall of the bailer A, and machine bolts 5 passing through the wall of the bailer chamber A and threaded into the shank 3. In this connection it will be understood that any desired securing means'may be employed which will positively retain the elements 1 and A in rigid relation in use, without departing from the spirit of our invention.

Centrally disposed within the tubular shank portion 3 is a vertical bore 6 which extends through the upper tapered portion 2 of the head 1 and through which .rod 7 extends. An eye 8 is formed at the upper end of the rod 7 to which the usual lowering rope (not shown) may be secured, and a striking head 9, preferably spherical in shape is connected to the lower end of this rod- It will be noted by reference to Fig. 2, that the central bore 6 1's enlarged, adja-, cent the inner end of the tubular shank portion 3, to provide a. conical wall 10 having its greatest diameter slightly in excess of the spherical striking head 9; and further, that the rod 7 is of slightly less diameter than the vertical bore 6, hereinafter to be explained. By this construction the rod 7 is free to be reciprocated within the head 1, to bring the spherical striking head 7 forcibly against the conical wall 10 of the shank 3 and impart an axial driving action to the tapered bailer head 1,'in the event thebailer should become lodged within the well shaft, as above explained.

It will be noted that the rod 7 is of sufficient length to permit the striking head to be lowered within the bailer chamber A a suflicient distance to impart a forceful blow against the inner tubular end 3 of the bailer-head 1, when the lowering cable is quickly raised by the use of a derrick beam or other hoist (not shown) The blows thus imparted to the shank 3 by the striker head 7 in rapid succession, in operation, will cause the bailer head 1 and its attached bailer chamber A to move upward through any obstruction which may exist in the well shaft, thereabove, until it is freed and can be hoisted in the usual manner.

. It has been found that the most efiicient results may be obtained under the forceful impacts heretofore referred to, by the utilization of a conically shaped wall 10, and a spherically shaped striking head 9. By this construction thepoint of contact between thetwo elements is reduced. tothe minimum, and due to their angular relation on impact, positive engagement of the elements is assured, irrespective of the presence of obstructive matter within the, chamber A. Since the force of the impact delivered by the striker head 9 is always exerted in an axial direction, and becausesuch force is symmetrically disposed about the axis of the 'rod 7, such construction greatly minimizes the chance of bending or breaking of the rod in use.

We have provided an annular collar 11 at the upper extremity of the tapered portion 2 of the bailer head 1, formed with. an annular series. of tapered grooves 12 with which the teeth of a fishing tool of stand: ard construction may be'engaged in case of rupture of the rod 7, or the cable attached thereto.

In Figs. 3 and 4 we have shown a'slightly modified form of bailer head 1, which permits the rod 7, eye 8 and striker head 9 being cast or otherwise formed in an integral piece. In these figures the head 1 is cast or otherwise formed in two or, more Vertical sections 13 and 141;, the sections being securd together by the engagement of the shank 3 within the wall of the bailer chamber A and retained by machine bolts 5 as will be understood from the foregoing.

We have shown and described a preferred construction and a slightly modified form of our invention for accomplishing the ob jects heretofore enumerated," and it will be understood that various other modifications may be made there-in by those skilled in the art, without departing from the spirit of our invention as defined in the following claim.

What we claim is A bailer head having a tapered upper portion and a. depending shank portion adapted to fit within the upper end of a well bailer, said shank portion being provided with an inverted conical striking face and a centrally disposed bore extending through said tapered portion, and a reciprocable rod extending through said central bore and between the conical wall of said striking face and formed with a spherical striking head at its inner extremity, whereby upon reciprocation of said rod the'spherical striking head is caused to impinge the conical wall of said striking face andbe directed into axial alignment with said central bore.

In testimony whereof we aflix our signatures.

FRED LOVE. CHARLES SHAW. 

